Term
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Definition
| a transfer of momentum and energy |
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Term
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Definition
| mechanical waves obey classical physics, and require a medium through which to travel |
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Term
| what is a nondispersive wave |
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Definition
| this is an example of a perfectly elastic wave that is momentarily displaced by a wave and then returned to its original position |
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Term
| a mechanical wave has two subunits, what are they |
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Definition
| transverse waves-like waves on a string & longitudinal wave- like sound waves |
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Term
| both transverse and longitudinal can be represented mathematically, how |
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Definition
for a transverse wave, the sine function represents vertical displacement of the medium vs. time
for a longitudinal wave, the sine represents pressue or horizontal displacement vs. time |
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Term
| what is frequency measured in |
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Definition
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| what is product of frequency and wavelength |
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Definition
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Term
| is amplitude always positive |
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Definition
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Term
| do sound waves made by a speeding jet travel at the same speed as the sound waves made by a crawling turtle? what can this tell us about the velocity of waves |
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Definition
| yes the sound waves from the speeding jet and the crawling turtle will be the same, this tells us that velocity of waves is not affect by the frequency or the wavelength but the medium itself |
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Term
| what are two aspects that can affect the velocity of a wave |
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Definition
| the elasticity or the medium and the medium's resistance to chnage motion |
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Term
| how do heavier mediums affect the velocity of the wave |
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Definition
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Term
| the velocity of waves in the gas phase can be increased by |
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Definition
| increasing the temperature |
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Term
| in gravity waves, like the waves in water, what increases their velocity |
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Definition
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Term
| what is the unit scale of decibels for |
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Definition
| measure the intensity of sounds |
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Term
| if the intensity of a sound increase by a factor of 10, the decibels |
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Definition
| increase by the addition of 10 decibels |
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Term
| how does the phase of a wave relate to a nondispersive medium |
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Definition
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Term
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Definition
| two waves that are the same wavelength but travel different distances to arrive at the same point |
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Term
| how do constructive and destructive interference relate to displacement |
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Definition
| constructive will add to the overall displacement while destructive will subtract from the overall displacement |
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Term
| pitch corresponds to frequency, a high note has higher frequency and |
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Definition
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Term
| when two waves are superimposeed, the resulting wave can be found by summing their what |
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Definition
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Term
| in order for two sound waves to have an audible beat frequency, the two waves must be |
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Definition
| relatively close in frequency |
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Term
| an important property of simple harmonic motion is the acceleration is directly proportional to |
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Definition
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Term
| an important characteristic of simple harmonic motion is the oscillation between kinetic and potential energy, what does this tell us about oscillation |
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Definition
| that no energy is lost to its surroundings |
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Term
| how would you describe a pendulum swinging |
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Definition
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Term
| give three examples of simple harmonic motion |
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Definition
| orbit of a planet (looking at it from the side), tether ball (looking at it from the side), & oscillating electrons |
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